Home / 8,519.16-12,778.83-2,972.51

Finding the Fourth Proportional to 8,519.16, 12,778.83 and 2,972.51

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Solution

The fourth proportional to 8,519.16, 12,778.83 and 2,972.51 is: 4,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.16 : 12,778.83 = 2,972.51 : x
  2. Step 2: Convert to fraction form
    8,519.16/12,778.83 = 2,972.51/x
  3. Step 3: Cross multiply
    8,519.16x = 12,778.83 × 2,972.51
  4. Step 4: Simplify right side
    8,519.16x = 37,985,136.07
  5. Step 5: Solve for x
    x = 37,985,136.07/8,519.16
  6. Step 6: Final answer
    x = 4,458.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.